A loop detection unit including a first contact portion in contact with a back surface of the recording material. A residual sheet detection unit including a second contact portion that is configured to come into contact with the back surface of the recording material. The first contact portion and the second contact portion are configured to rotate on the same rotation shaft. The second contact portion is configured to come into contact with the back surface of the recording material on a downstream of the first contact portion in the conveyance direction of the recording material.